(19)

(11)

EP 1 181 694 A1

(12)

(43) Date of publication: 27.02.2002 Bulletin 2002/09 (21) Application number: 00932504.4 (22) Date of filing: 17.05.2000

(51) International Patent Classification (IPC)7: G11C 11/409, G11C 11/407, G11C 7/00 (86) International application number: PCT/US0013/476 (87) International publication number: WO 0074/063 (07.12.2000 Gazette 2000/49)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE Designated Extension States: AL LT LV MK RO SI (30) Priority: 01.06.1999 US 323363 (71) Applicant: Infineon Technologies North America Corp. San Jose, CA 95112-6000 (US)	(72) Inventors: ALSMEIER, Johann Wappingers Falls, NY 12590 (US) GRUENING, Ulrike Wappingers Falls, NY 12590 (US) MUELLER, Gerhard Wappingers Falls, NY 12590 (US) PARK, Young-Jin Poughkeepsie, NY 12603 (US) (74) Representative: Westphal, Klaus, Dipl.-Ing.  Patentanwälte Westphal, Mussgnug & Partner, Waldstrasse 33 78048 Villingen-Schwenningen 78048 Villingen-Schwenningen (DE)